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Solenoid's just turn the co2 on/off, usually done with a timer. Many, including me, have run co2 24/7. You are basically wasting co2 when you run it at night, didn't have a solenoid so I didn't really have a choice. Plant's use o2 at night and need co2 during lights on to photosynthesize. The main thing you need for a co2 setup is a tank, regulator, needlevalve, and diffusor/reactor. A solenoid is something that is not absolutely needed but helpful. Also, get a decent needle valve. The fabco nv-55 is bar none, the best bang for the buck. You can find it for a little over $20. There are better one's out there, but the fabco will do the job just fine. As for the milwaukee regulators, I've read that they are hit/miss. Some love them and some just hate them. The main problem is that the needle valve may not be very consistent and the solenoid sometimes sticks. I've never owned one of those regulators so I am just going off of what I had read when I was shopping around for a regulator. I ended up getting my regulator here. They can build you a solid regulator that you will have no problems with and will last a lifetime. You also check these site's out too: rex and gla. Not the cheapest but solid built regulators.
 

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i might try getting this
If you do get that, I do suggest trading out that needle valve. A needle valve will definatley make a difference in having a nice tank and having a nice tank with a lot of dead fish. Again, I don't have first hand experience with that regulator but I'm just going off of what I have read in the past.
 

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If you do get that, I do suggest trading out that needle valve. A needle valve will definatley make a difference in having a nice tank and having a nice tank with a lot of dead fish. Again, I don't have first hand experience with that regulator but I'm just going off of what I have read in the past.
Based on what I heard while researching, I have to second that.
 

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Don't forget to factor in shipping to Hawaii of all places...Sure beverage factory has good prices but they don't ship outside of the continental US. Check at the end of the "Shipping Information" section in the link(I checked the website and it doesn't have the same info).

http://cgi.ebay.com/5-lb-Co2-Tank-K...ash=item19b5a0fc5a&_trksid=p4634.c0.m14.l1262

Back in february, I had to do a lot of research to find the best prices on a 2.5lb tank and it turns out that amazon was the cheapest overall; the cost of the cylinder was $72 but the shipping was very low($9). The seller turned out to be catalinacylinders.com like nokturnalkid mentioned but they only sell 2.5lb tanks on amazon so you should contact them directly. As far as regulators go, I have milwaukee regulators and like them just fine. The last one I purchased was also from amazon for $97 with $8 shipping and it has everything you need i.e needle valve, bubble counter, solenoid. You're not going to find a new cylinder or regulator for those prices around here.

http://www.amazon.com/gp/product/B000NV9CC8/ref=ox_ya_oh_product
http://www.amazon.com/gp/product/B001DTNWF2/ref=ox_ya_oh_product
 

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That's definately a good deal, imo. A word of advice, when shopping online, always get a shipping quote. Calculators aren't always accurate.
That's the actual shipping for the cylinder from amazon, that's why I posted it :) But yeah always check because us islanders always get raped by the shipping lol
 

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Discussion Starter · #29 ·
hmm... after searching more, found out aquatek's pressure is fixed. might go with the mailwaukke one in that case xD and thanks for the tank info. also found a 10# there for $89 and ships 22.30... so 5# or 10#?
 

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hmm... after searching more, found out aquatek's pressure is fixed. might go with the mailwaukke one in that case xD and thanks for the tank info. also found a 10# there for $89 and ships 22.30... so 5# or 10#?
I remember reading some bad reviews on the aquatek regulator however, I don't remember where. Get the biggest cylinder that you can afford. I personally have a 20lb and a 10lb backup but only because I have a 6-way splitter for my main tanks. Don't forget to buy teflon tape and extra nylon washers! When I first setup my co2 system I had leaks in various places until I put teflon tape on every threaded part from the cylinder to the bubble counters and I suggested nylon washers because I've had nothing but trouble with permaseals breaking(the milwaukee regulators come with 2 irregular washers but you can use the normal/flat ones that are sold everywhere).
http://www.plantedtank.net/forums/equipment/90148-permaseal-broken.html

If you ever decide to add a splitter, you might need some metal extension bars, connectors, etc to provide clearance between the regulator and splitter. This is the place to go.
http://www.swagelok.com/
 
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